<template>
    <div>
        <!--        面包屑导航区-->
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!--卡片视图区域-->
        <el-card>
            <!--搜索框-->
            <el-row :gutter="20">
                <el-col :span="9">
                    <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable="clearable" @clear="getUserList">
                        <el-button @click="getUserList" slot="append" icon="el-icon-search"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button @click="addDialogVisible=true" type="primary">添加用户</el-button>
                </el-col>
            </el-row>
            <!--用户列表区域-->
            <el-table :data="userList" border="border" stripe="stripe">
                <el-table-column type="index" label="#"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state"></el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180px">
                    <template slot-scope="scope">
                        <!-- 修改按钮-->
                        <el-button @click="showEditDialog(scope.row.id)" type="primary" icon="el-icon-edit" size="mini"></el-button>
                        <!-- 删除按钮-->
                        <el-button @click="removeUserById(scope.row.id)" type="danger" icon="el-icon-delete" size="mini"></el-button>
                        <!-- 分配角色-->
                        <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
                            <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!--分页显示-->
            <el-pagination
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="queryInfo.pagenum"
                    :page-sizes="[1,2,5,10]"
                    :page-size="queryInfo.pagesize"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total">
            </el-pagination>

        </el-card>

<!--    添加用户对话框-->
        <el-dialog
                title="添加用户"
                :visible.sync="addDialogVisible"
                width="30%"
                @close="addDialogClosed"
                >
            <!--内容主体区域-->
            <el-form ref="form"  :rules="addFormRules" :model="addForm" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username" ></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password" type="password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email" ></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="addForm.mobile" ></el-input>
                </el-form-item>
            </el-form>
            <!--底部区域-->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
<!--    修改用户对话框-->
        <el-dialog
                title="修改用户"
                :visible.sync="editDialogVisible"
                width="50%"
                @close="editDialogClosed"
        >
            <!--内容主体区域-->
            <el-form ref="editFormRef" :rules="editFormRules"  :model="editForm" label-width="70px">
                <el-form-item label="用户名">
                    <el-input v-model="editForm.username" disabled="disabled"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="editForm.email" ></el-input>
                </el-form-item>
                <el-form-item label="手机" prop="mobile">
                    <el-input v-model="editForm.mobile" ></el-input>
                </el-form-item>
            </el-form>
            <!--底部区域-->
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>
        <!--分配角色的对话框-->
        <el-dialog
            title=""
            :visible.sync="setRoleDialogVisible"
            width="50%"
            @close="setRoleDialogClosed"
        >
            <div>
                <p>当前的用户：{{userInfo.username}}</p>
                <p>当前的角色：{{userInfo.role_name}}</p>
                <p>分配新角色：
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id"></el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible=false">取消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
    export default {
        name: "Users.vue",
        created() {
            this.getUserList();
        },
        data() {
            // 验证邮箱的规则
            var checkEmail=(rule, value, callback)=>{
                const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/;
                if (regEmail.test(value)) {
                    // 合法的邮箱
                    return callback();
                }
                callback(new Error('请输入合法的邮箱'))
            };

            var checkMobile=(rule, value, callback)=>{
                // 验证手机号的正则表达式
                const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
                if (regMobile.test(value)) {
                    return callback();
                }
                callback(new Error('请输入合法的手机号'));
            };
            return {
                queryInfo: {
                    query: '',
                    pagenum: 1,
                    pagesize: 2
                },
                userList: [],
                total: 0,
                // 控制 添加用户对话框的显示与隐藏
                addDialogVisible:false,
                editDialogVisible:false,
                // 添加用户的表单数据
                addForm:{
                    username:'',
                    password:'',
                    email:'',
                    mobile:''
                },
                editForm:{},
                // 添加表单的验证规则对象
                addFormRules:{
                    username:[
                        {required:true, message:'请输入用户名',trigger:'blur'},
                        {min:3, max:10, message:'长度在3-10个字符之间',trigger:'blur'}
                    ],
                    password:[
                        {required:true, message:'请输入密码',trigger:'blur'},
                        {min:6, max:15, message:'长度在6-15个字符之间',trigger:'blur'}
                    ],
                    email:[
                        {required:true, message:'请输入邮箱',trigger:'blur'},
                        {validator:checkEmail, trigger: 'blur'}
                    ],
                    mobile:[
                        {required:true, message:'请输入手机',trigger:'blur'},
                        {validator:checkMobile, trigger: 'blur'}
                    ]
                },
                // 修改表单的验证规则
                editFormRules:{
                    email:[
                        {required:true, message:'请输入邮箱',trigger:'blur'},
                        {validator:checkEmail, trigger: 'blur'}
                    ],
                    mobile:[
                        {required:true, message:'请输入手机',trigger:'blur'},
                        {validator:checkMobile, trigger: 'blur'}
                    ]
                },
                // 控制分配角色对话框的显示与隐藏
                setRoleDialogVisible:false,
                // 需要被分配角色的用户信息
                userInfo:{},
                // 所有角色的数据列表
                rolesList:[],
                // 已选中的角色 id 值
                selectedRoleId:'',
            }
        },
        methods: {
            async getUserList() {
                const {data: res} = await this.$http.get('users', {params: this.queryInfo})
                if (res.meta.status === 200) {
                    this.userList = res.data.users;
                    this.total = res.data.total;
                } else {
                    this.$message.error('获取列表失败');
                }
            },
            // 监听 pagesize 改变的事件
            handleSizeChange(newSize) {
                this.queryInfo.pagesize = newSize;
                this.getUserList();  // 刷新页面
            },
            // 监听 页码值 改变的事件
            handleCurrentChange(newPage) {
                this.queryInfo.pagenum = newPage;
                this.getUserList();
            },

            //监听添加用户对话框关闭事件
            addDialogClosed(){
                this.$refs.form.resetFields();
            },
            // 点击按钮，添加新用户
            addUser(){
                this.$refs.form.validate(async valid =>{
                    if(valid){
                        // 发起添加请求
                        const {data:res} = await this.$http.post('users',this.addForm)
                        if(res.meta.status===201){
                            this.$message.success('添加用户成功');
                            this.addDialogVisible=false;
                            this.getUserList();
                        }
                    }
                })
            },

            // 查询用户信息
            async showEditDialog(id){
                const {data:res}=await this.$http.get('users/'+id);
                if(res.meta.status !==200){
                    return this.$message.error('查询用户信息失败')
                }
                this.editForm = res.data;
                this.editDialogVisible=true;
            },

            // 重置 修改用户信息的弹框
            editDialogClosed(){
                this.$refs.editFormRef.resetFields()
            },

            //修改用户信息
            editUserInfo(){
                this.$refs.editFormRef.validate(async valid=>{
                    if(valid){
                        // 发起修改用户信息的请求
                        const {data:res}= await this.$http.put('users/'+this.editForm.id,{email:this.editForm.email,mobile:this.editForm.mobile})
                        if(res.meta.status!==200){
                            return this.$message.error('更新用户信息失败');
                        }
                        this.editDialogVisible=false;  // 关闭对话框
                        this.getUserList();  // 刷新数据列表
                        this.$message.success('更新用户信息成功');
                    }else{
                        this.$message.error('修改信息有错误');
                    }
                })
            },

            // 删除用户
            async removeUserById(id){
                const resultText=await this.$confirm(
                                        '此操作将永久山删除该用户，是否继续？',
                                        '提示',
                                        {
                                            confirmButtonText:'确定',
                                            cancelButtonText:'取消',
                                            type:'warning'
                                        }
                                    ).catch(err =>{
                                        return err
                                    });
                // 如果用户确定删除，则返回值是 confirm 字符串
                // 如果用户取消删除，会发生异常，需要返回，返回值是 cancel 字符串
                if(resultText === 'confirm'){
                    const {data:res}=await this.$http.delete('users/'+id);
                    if(res.meta.status!==200){
                        return this.$message.error('删除失败');
                    }else{
                        this.$message.success('删除成功');
                        this.getUserList();
                    }
                }else{
                    this.$message.info('取消了删除');
                }
            },

            // 展示分配角色的对话框
            async setRole(userInfo){
                this.userInfo=userInfo;
                // 获取所有角色列表
                const {data:res}=await this.$http.get('roles');
                if(res.meta.status!==200){
                    return this.$message.error('获取角色列表失败');
                }
                this.rolesList=res.data;
                this.setRoleDialogVisible=true;
            },

            // 保存分配的角色
            async saveRoleInfo(){
                if(!this.selectedRoleId){
                    return this.$message.error('请选择要分配的角色');
                }
                const {data:res} = await this.$http.put(`users/${this.userInfo.id}/role`,{rid:this.selectedRoleId});
                if(res.meta.status!==200){
                    return this.$message.error('更新角色失败');
                }
                this.$message.success('更新角色成功');
                this.getUserList();
                this.setRoleDialogVisible = false;
            },

            setRoleDialogClosed(){
                this.selectedRoleId='';
            },
        }
    }
</script>

<style lang="less" scoped>

</style>